The function convert_legacy_u32_to_link_mode and
convert_link_mode_to_legacy_u32 may be used outside
of ethtool.c. We rename them to ethtool_convert_...
and export them, so we could use them in others
drivers and modules.
Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The current tun_net_xmit() implementation don't need any external
lock since it relies on rcu protection for the tun data structure
and on socket queue lock for skb queuing.

This patch set the NETIF_F_LLTX feature bit in the tun device, so
that on xmit, in absence of qdisc, no serialization lock is acquired
by the caller.

The user space can remove the default tun qdisc with:

tc qdisc replace dev <tun device name> root noqueue
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

We deleted a line of code and accidentally made the "return put_user()"
part of the if statement when it's supposed to be unconditional.

Fixes: 9f9a45be ('udp: do not expect udp headers on ioctl SIOCINQ')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch passes netlink attr data ptr directly to dev_get_stats
thus elimiating a stats copy.
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Vivien Didelot says:

====================
net: dsa: mv88e6xxx: factorize switch info

This patchset factorizes the mv88e6xxx code by sharing a new extendable
info structure to store static data such as switch family, product
number, number of ports, number of databases and the name.

The next step is to add a "flags" bitmap member to the info structure in
order to simplify the shared code with a feature-based logic instead of
checking their family/ID.

This is a step forward having a single mv88e6xxx driver supporting many
similar devices, like any usual Linux driver.

Changes v3 -> v4:
  - constify probed name in DSA
  - rebase patchset above conflicting commit 48ace4ef

Changes v2 -> v3:
  - update commit messages and add Andrew's tags
  - keep the info lookup code in a separated function
  - split the single switch ID reading in probe in a new commit

Changes v1 -> v2:
  - define PORT_SWITCH_ID_PROD_NUM_* values
  - use plain struct mv88e6xxx_info
  - remove non used yet ps->rev
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

ps->id is not needed anymore, so remove it as well as the related
defined values.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add the number of databases to the info structure.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Drop the ps->num_ports variable in favor of a new member of the info
structure. This removes the need to assign it at setup time.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add an mv88e6xxx_family enum to the info structure for better family
indentification.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add a new switch info structure which is meant to store switch models
static information, such as product number, name, number of ports,
number of databases, etc.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Read the switch ID only once, at probe time, to avoid multiple read
accesses and MII bus checking.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

There is no point in having a special case for the revision when probing
a switch model. The code gets cluttered with unnecessary defines, and
leads to errors when code such as mv88e6131_setup compares
PORT_SWITCH_ID_6131_B2 to ps->id which masks the revision.

Drop every revision definition, and lookup only the product number.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Every driver assigns ps->ds even though it gets assigned in the shared
mv88e6xxx_setup_common function. Kill redundancy.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Change the dsa_switch_driver.probe function to return a const char *.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jakub Kicinski says

====================
nfp: cleanups and improvements

Main purpose of this set is to get rid of doing potentially long
mdelay()s but it also contains some trivial changes I've accumulated.
First two patches fix harmless copy-paste errors, next two clean up
the documentation and remove unused defines.  Patch 5 clarifies the
interpretation of RX descriptor fields.  Patch 6, by far the biggest,
adds ability to perform FW reconfig asynchronously thanks to which
we can stop using mdelay().
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Some callers of nfp_net_reconfig() are in atomic context so
we used to busy wait for commands to complete.  In worst case
scenario that means locking up a core for up to 5 seconds
when a command times out.  Lets add a timer-based mechanism
of asynchronously checking whether reconfiguration completed
successfully for atomic callers to use.  Non-atomic callers
can now just sleep.

The approach taken is quite simple because (1) synchronous
reconfigurations always happen under RTNL (or before device
is registered); (2) we can coalesce pending reconfigs.
There is no need for request queues, timer which eventually
takes a look at reconfiguration result to report errors is
good enough.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Meaning of data_len and meta_len RX WB descriptor fields is
slightly confusing.  Add a comment with a diagram clarifying
the layout.  Also remove the buffer length validation:
(a) it's imprecise for static rx-offsets; (b) if firmware
is buggy enough to DMA past the end of the buffer
WARN_ON_ONCE() doesn't seem like a strong enough response.
skb_put() will do the checking for us anyway.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

NFP_NET_RXR_MASK sounds like a mask which could be used on
NFP_NET_CFG_RXRS_ENABLE register but its value is quite
strange.  In fact there are no users of this define so let's
just remove it.  Same for TX rings.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation in comments lacks CFG in some names.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

There is no reason for those local variables to be static.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Correct checking error condition on wrong pointer -
copy/paste mistake most likely.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Phil Sutter says:

====================
Minor IFF_NO_QUEUE conversion follow-up

The following series converts two further drivers away from setting
'tx_queue_len = 0' to adding IFF_NO_QUEUE to priv_flags instead.

The first one, rtl8188eu in staging didn't exist back when all drivers
were converted. The second one, openvswitch seems to have slipped through
my grep'ing back then, no idea why.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

Cc: Jakub Sitnicki <jsitnicki@gmail.com>
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

Taku Izumi says:

====================
FUJITSU Extended Socket driver version 1.1

This patchsets update FUJITSU Extended Socket network driver into version 1.1.
This mainly includes some improvements and minor bugfix.

v1->v2:
  - Remove ioctl and debugfs facility according to David comment
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch introduces spinlock of rx_status for
proper excusive control.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch enhances the fjes_change_mtu() method
by introducing new flag named FJES_RX_MTU_CHANGING_DONE
in rx_status. At the same time, default MTU value is
changed into 65510 bytes.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In fjes_raise_intr_rxdata_task(), there's a bug of bitwise
check because of missing "& FJES_RX_POLL_WORK".
This patch fixes this bug.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

There are bugs of acounting statistics in fjes_xmit_frame().
Accounting self stats is wrong. accounting stats of other
EPs to be transmitted  is right.
This patch fixes this bug.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch optimizes the following timeout value.
 - FJES_DEVICE_RESET_TIMEOUT
 - FJES_COMMAND_REQ_TIMEOUT
 - FJES_COMMAND_REQ_BUFF_TIMEOUT
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In the socfpga_dwmac_probe function, we have a call to socfpga_dwmac_setup,
which is already called from socfpga_dwmac_init later in the probe function.
Remove this extra call to socfpga_dwmac_setup.

Also we should not be calling socfpga_dwmac_setup() directly without wrapping
it around the proper reset assert/deasserts. That is because the
socfpga_dwmac_setup() is setting up PHY modes in the system manager, and it
is requires the EMAC's to be in reset during the PHY setup.
Reported-by: Matthew Gerlach <mgerlach@opensource.altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

These macros hide a ds variable and a return statement on error, which
can lead to locking issues. Kill them off.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

I realized that when I added NETIF_F_TSO_MANGLEID as a TSO type I forgot to
add it to NETIF_F_ALL_TSO.  This patch corrects that so the flag will be
included correctly.

The result should be minor as it was only used by a few drivers and in a
few specific cases such as when NETIF_F_SG was not supported on a device so
the TSO flags were cleared.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Alexander Duyck says:

====================
Add support for offloads with IPv6 GRE tunnels

This patch series enables the use of segmentation and checksum offloads
with IPv6 based GRE tunnels.

In order to enable this series I had to make a change to
iptunnel_handle_offloads so that it would no longer free the skb.  This was
necessary as there were multiple paths in the IPv6 GRE code that required
the skb to still be present so it could be freed.  As it turned out I
believe this actually fixes a bug that was present in FOU/GUE based tunnels
anyway.

Below is a quick breakdown of the performance gains seen with a simple
netperf test passing traffic through a ip6gretap tunnel and then an i40e
interface:

Throughput Throughput  Local Local   Result
           Units       CPU   Service Tag
                       Util  Demand
                       %
3544.93    10^6bits/s  6.30  4.656   "before"
13081.75   10^6bits/s  3.75  0.752   "after"
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch adds code borrowed from bits and pieces of other protocols to
the IPv6 GRE path so that we can support GSO over IPv6 based GRE tunnels.
By adding this support we are able to significantly improve the throughput
for GRE tunnels as we are able to make use of GSO.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Since GRE doesn't really care about L3 protocol we can support IPv4 and
IPv6 using the same offloads.  With that being the case we can add a call
to register the offloads for IPv6 as a part of our GRE offload
initialization.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch adds support for the basic offloads we support on most devices.
Specifically with this patch set we can support checksum offload, basic
scatter-gather, and highdma.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When we were creating an ip6gretap interface the MTU was about 6 bytes
short of what was needed.  It turns out we were not taking the Ethernet
header into account and as a result we were eating into the 8 bytes
reserved for the encap limit.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch updates the IP tunnel core function iptunnel_handle_offloads so
that we return an int and do not free the skb inside the function.  This
actually allows us to clean up several paths in several tunnels so that we
can free the skb at one point in the path without having to have a
secondary path if we are supporting tunnel offloads.

In addition it should resolve some double-free issues I have found in the
tunnels paths as I believe it is possible for us to end up triggering such
an event in the case of fou or gue.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>